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Public Use Microdata Area
A Public Use Microdata Area, or PUMA, are geographic units used by the US Census for providing statistical and demographic information. Each PUMA contains at least 100,000 people. PUMAs do not overlap, and are contained within a single state. PUMAs were first created for the 1990 Census. For the 2012 American Community Survey (ACS), there are 2,378 PUMAs. PUMAs allow the Census to publish census data for sub-state areas throughout every state. For example, the ACS publishes detailed data every year, but due to their sampling procedure only publishes data for census area that have more than 65,000 People. Only seven of the 55 counties of West Virginia were large enough to receive estimates from the 2006 ACS. In contrast, all 12 PUMAs that partition West Virginia received 2006 ACS estimates. The state governments drew PUMA boundaries for the 2000 Census, to allow reporting of detailed data for all areas. There were a total of 2,071 PUMAs in the 2000 Census. See also * Census ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Community Survey
The American Community Survey (ACS) is a demographics survey program conducted by the U.S. Census Bureau. It regularly gathers information previously contained only in the long form of the decennial census, such as ancestry, citizenship, educational attainment, income, language proficiency, migration, disability, employment, and housing characteristics. These data are used by many public-sector, private-sector, and not-for-profit stakeholders to allocate funding, track shifting demographics, plan for emergencies, and learn about local communities. Sent to approximately 295,000 addresses monthly (or 3.5 million per year), it is the largest household survey that the Census Bureau administers. The American Community Survey gathers information annually in the 50 U.S. states, the District of Columbia, and Puerto Rico — however it does not gather information in four major U.S. territories (American Samoa, Guam, the Northern Mariana Islands, and the U.S. Virgin Islands).http://www3. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2000 United States Census
The United States census of 2000, conducted by the Census Bureau, determined the resident population of the United States on April 1, 2000, to be 281,421,906, an increase of 13.2 percent over the 248,709,873 people enumerated during the 1990 census. This was the twenty-second federal census and was at the time the largest civilly administered peacetime effort in the United States. Approximately 16 percent of households received a "long form" of the 2000 census, which contained over 100 questions. Full documentation on the 2000 census, including census forms and a procedural history, is available from the Integrated Public Use Microdata Series. This was the first census in which a state – California – recorded a population of over 30 million, as well as the first in which two states – California and Texas – recorded populations of more than 20 million. Data availability Microdata from the 2000 census is freely available through the Integrated Public Use Microdata Serie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Census Tract
A census tract, census area, census district or meshblock is a geographic region defined for the purpose of taking a census. Sometimes these coincide with the limits of cities, towns or other administrative areas and several tracts commonly exist within a county. In unincorporated areas of the United States these are often arbitrary, except for coinciding with political lines. Census tracts represent the smallest territorial entity for which population data are available in many countries. In the United States, census tracts are subdivided into block groups and census blocks. In Canada they are divided into dissemination areas. In the U.S., census tracts are "designed to be relatively homogeneous units with respect to population characteristics, economic status, and living conditions" and "average about 4,000 inhabitants". By country Brazil The Brazilian Institute of Geography and Statistics uses the term census sector (''setor censitário'')''.'' As of the 2010 Census, there ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Census Block
A census block is the smallest geographic unit used by the United States Census Bureau for tabulation of 100-percent data (data collected from all houses, rather than a sample of houses). The number of blocks in the United States, including Puerto Rico, for the 2010 Census was 11,155,486. Census blocks are grouped into block groups, which are grouped into census tracts. There are on average about 39 blocks per block group. Blocks typically have a four-digit number; the first number indicates which block group the block is in. For example, census block 3019 would be in block group 3. Blocks are typically bounded by roads and highways, town/city/county/state boundaries, creeks and rivers, etc. In cities, a census block may correspond to a city block A city block, residential block, urban block, or simply block is a central element of urban planning and urban design. A city block is the smallest group of buildings that is surrounded by streets, not counting any type of thoroughf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
